According to the article Deep Roots about fetal precursors of temperament, in a correlational study, causal conclusions:
(a) can only be drawn if the correlation is very strong
(b) can only be drawn if the correlation has a positive sign
(c) can only be drawn if there is more than one correlation
(d) can not be determined
D
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The only time the range may equal zero, is when
a. the standard deviation is less than 1.00 b. every score in the distribution is the same c. the standard deviation is negative d. the interdecile range is skewed to the left
Last week Sarah had exams in math and in Spanish. On the math exam, the mean was µ = 40 with ? = 5, and Sarah had a score of X = 45 . On the Spanish exam, the mean was µ = 60 with ? = 8, and Sarah had a score of X = 68 . For which class should Sara expect the better grade?
a. Math b. Spanish c. The grades should be the same because the two exam scores are in the same location. d. There is not enough information to determine which is the better grade.